this post was submitted on 22 Sep 2024
104 points (97.3% liked)

Math Memes

1506 readers
130 users here now

Memes related to mathematics.

Rules:
1: Memes must be related to mathematics in some way.
2: No bigotry of any kind.

founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] mvirts@lemmy.world 20 points 1 month ago (4 children)
[–] TunaCowboy@lemmy.world 31 points 1 month ago (2 children)

Naw, 5 + 1 = 6, 6 is divisible by 3, so 51 is divisible by 3.

[–] xpinchx@lemmy.world 4 points 1 month ago

I shared this at work recently and nobody cared. 3 6 and 9 are all kinda special.

[–] ShareMySims@sh.itjust.works 19 points 1 month ago* (last edited 1 month ago) (2 children)

Only if you weren't taught (or were, but too long ago lol) the divisible by 3 rule - if the sum of the digits is divisible by 3, so is the whole number. 5+1=6 therefore 51 is divisible by 3! Bonus division rule - if it was also an even number and therefore divisible by 2, you could deduce that the whole number was divisible by 6.

[–] Xtallll@lemmy.blahaj.zone 22 points 1 month ago (2 children)
[–] Cadeillac@lemmy.world 9 points 1 month ago

!unexpectedfactorial@sopuli.xyz

[–] Nougat@fedia.io 4 points 1 month ago (1 children)

Actually, 51 is not divisible by 3!

It is divisible by 3

[–] smeg@feddit.uk 4 points 1 month ago (1 children)

Surely it's 1? Looks prime, and some people will even argue that it is!

[–] mvirts@lemmy.world 4 points 1 month ago

Its only factors are 1 and itself after all

[–] demonmittenhands@lemmy.world 3 points 1 month ago

Agreed. 51 looks prime AF.